SA518400698B1 - Improved antistatic pressure tank - Google Patents

Abstract

Pressure tank for storage of high and low fluids/gases, particularly LPG, LNG or CNG, comprising a hollow body (1) of thermoplastic material with at least one outlet (11), which has a surrounding contact area (111), one boss (2) each per outlet (11), which has at least one aperture (21) each to the interior (13) of the hollow body (1) and which is connected by a complementary contact area (26) over its entire surface with contact area (111), whereas the aperture (21) has a diffuser (22) at a bottom end, sealing the aperture (21) in an axial direction and comprising only openings (221), which point primarily in radial direction, comprising a static eliminator wall (27) around the diffuser (22) inside the hollow body (1), whereas the static eliminator wall (27) is a part of the boss (2) or the neckring (23) or is fixed as a separate part on coupling piece (3). Fig. 1

Description

Improved antistatic pressure tank Full Description BACKGROUND The present invention relates to a pressure tank for storage of liquids/gases under high and low pressures; particularly LPG, LNG or CNG consisting of a hollow body of plastic material with a single port on (BY) which has a surrounding contact area; The outlet of this polygonal process is present with at least one aperture to the inner regions of the corpus cava and is connected over the entire space by a jag complementary to the junctional region; At the lower end of the outlet, the diffuser and outlet provisions are in the axial direction, with guide holes in the diagonal direction; With the antistatic wall inside the hollow body surrounding the diffuser. In the previous types of tanks for storing gases or liquids are known; Ally is under 0 pressure, low or high; For example liquefied natural gas, liquefied natural gas or compressed natural gas. These tanks are manufactured among other materials such as plastic materials in blow molding; rotational molding ¢ injection molding; PET injection process. in order to increase the compressive strength; These tanks are covered in a second step with an outer layer of elastic fibers; which is sale impregnated with resinous materials; Which connects the fibers to each other and the 5th layer of plastic is adjoined to the inner tank. regardless of embodiment; In no case should such a tank be provided with at least one ribbed protrusion; which is pressed tightly - a coupling piece like a valve; hose or tube end; In order to fill or empty the tank. The connection between the ribbed extrusion and the coupling piece can be made through a plug-locking latch or a dpa socket; For high pressure applications but mainly pitch 0 screw sockets with low threading. internal hollow body; also called lining; It can be made of metal. For example aluminium; titanium or steel; But as mentioned at the beginning, Lad is plastic, for example, thermoplastic. This material has an advantage; And they can be easy to cast ¢ and thus lead to a reduction in manufacturing costs ging its thermal coefficient of expansion better adapted to a matrix of reinforced outer layer «LVL» which is usually a resin material. Other than that the minuses is resistance

Less stress compared to thicker wall liners and also less temperature resistance. Depending on the application» but these advantages stand behind the advantages mentioned above. Another downside to plastic liners is; It is an important factor of the present invention; It is its low electrical conductivity resulting in a tendency for static charge when filling tanks with liquid under high pressure. The liquid flows out of the outlet of a metal fill valve usually at a high speed; and thus carries electrons; which then accumulates at the point of impact while impacting the inner tank wall. Separation of charges can also be caused by the pressurized fluid; Which hits the other side of the inner wall at high speed. In hollow bodies or linings made of metal or other conductive materials a 0 balanced charge can be achieved quickly and easily. For increased frothing safety. The hollow body/liner as well as the valve can also be grounded. This cannot be effectively applied to plastic liners; For example plastics due to their poor electrical conductivity. This leads to a stable charging process of the corpus callosum/lining; which can literally dump in a flash and can cause an unexpected explosion; If there is still adieu oxygen inside the tank or if the mixed liquid(s) itself is flammable. This problem occurs during the process of filling the empty pressure tank» as the discharge of the generated static electricity cannot occur; when there is still oxygen available; It has not been treated with inert gas before. As the previous technique proposed two types of solutions to this problem; Which can be summarized with the keywords AY) and prevention. Both solutions are exemplified in US Patent No. B27,656,642 (0 Olek Lev et al.). solutions are still the reason; To improve the conductivity of the inner tank wall; For example by conductive coating of (sha) conductive plastics. However; The downside of this solution is that the advantage of an easier and lower-cost manufacturing process for plastic ally liners is again at least partially determined. Furthermore; Jie This paint 5 corrodes quickly in those areas of the inner tank wall; ally is subject to significant stress; Above all at the point you are facing the exit. Also apply the addition of specific antistatic improvers; These will only have an effect for a short time. The prevention strategy, however, begins with stable electrical triggers; Which should be seen in the high flow velocity of the fluid into the valve. to reduce it; It is suggested to add a diffuser at the lower end of the valve. and the tightness of the outlet in the axial direction with the presence of guide holes in the diagonal direction;

So that the flowing liquid gets redirected. And so it slowed down on the one hand; On the other hand, it does not affect the inner wall by encountering a concentrated flow of liquid; but divided into several partial streams; which is without further treatment first the spread of the liquid in a diagonal direction and longer that; by the influence of gravity; It will deviate slightly and tangentially touch the inner wall. In order to achieve more speed reduction; It is suggested in this patent; The diffuser inside the outlet of the tank liner is additionally surrounded with a ribbed collar; lly formed as part of the corpus callosum/lining. Thus the liquid drained from the diagonal holes of the diffuser hits the ring and is thus redirected once severe shang GAT downward in the form of droplets. The drawback of this solution is that the severe deceleration of the fluid by the enclosed annulus causes an ede 0 void left between the Hall and the annulus; So that a strong counter pressure is built up and hence a very low rate flow. The fluid flow in this space is turbulent (clan) resulting in heavy mechanical load on adjacent parts; “EU link; ribbed ridge and collar; This leads to accelerated aging of parts. However, the more serious problem of strong counterpressure in the space between the diffuser and the collar is 5 that it leads to the fact that the flowing fluid presses on the joint between the liner and the ribbed protrusion; which is located on the upper side in the space between the diffuser and the collar; And the tightness of the pressure tank there can be threatened; Especially under high filling pressure rates. As the wall thickness and accuracy requirements of the polygonal extrusion are significantly different from the wall thickness and tolerances of the pressure tank; Practically unreasonable and not economical to manufacture a ribbed extrusion and tank as a single 0 piece. Instead of that; it is common; Manufacture of the hollow body after it is completed in another step as a separate product and in most cases the polygonal extrusion is multi-part. For example (Jl) US Patent Application No. 010/1002/2011 describes a plastic tank with two outlets. On these outlets, both on the outside and on the inside; is placed a roughly ribbed protrusion which is widened at one end 5 with a collar flange eg These two parts are joined side by side, thus pressing the clas so that it lays clearly from the inside and from the outside on the area around the outlet of the tank.By corresponding pressure in addition to inserting the sealing rings into the tank or the flange, the required compressive strength is obtained.PATENT US Patent No. A1 2014/0299610 describes a pressure tank with a two-piece ribbed oi; the outer part of which is of a softer, more flexible material to provide connection to the hollow body/liner

and the fiber reinforced layer. sal) the second is an acentric part of the Bam in this outer polygonal process; which provides connection to a valve or other internal coupling. It is manufactured from a solid material; In order to withstand the pressures that occur on it. Between the inner part and the valve, there is a sealing flange in the ribbed extrusion; which together with one or more sealing rings secures around the valve airtight even under high pressures. This publication teaches to reduce the diagonal thickness of a sealant flange in proportion to the required test pressure. The negative, however, is that the seal flange may be under high pressures unable to balance the pressure caused by valve damage; The outlet ribbed extrusion and especially the sealing rings; which may lead to leakage. against this background; The present invention has dealt with the task of developing combined pressure tanks; ribbed extrusion; which effectively prevents static charges; However, high filling rates can be obtained while ensuring absolute tightness also at high pressures. Eyeliner; alas the invention provides a fixed eliminator wall around the diffuser; which is formed as part of the ribbed ridge or of the neck ring; It is explained below; or from the coupling piece. Then provisions during the 5 packing process are ensured by fact; It is unavoidable that the joint connection between the ribbed extrusion and body cavity/liner is conveniently located outside the space between the diffuser and the static wall; Which is under high dynamic load during the filling process. GENERAL DESCRIPTION OF THE INVENTION In a preferred embodiment this reduction in compression velocity is achieved with several 0 turbulence release slots; distributed around its surroundings. liquids can; Which flows into the space between the diffuser at the lower end of the orifice and the static-removing wall leaving this space through these orifices. This unloads the remaining space between the diffuser and the wall eliminating static and thus provides a higher flow rate. Flow disturbances can be affected by proper positioning of the turbulence release orifices 5 and the release relative to the diffuser's diagonal orifices. Hence it makes sense; Provide for all diffuser openings at least one antistatic hole in the wall. These can be roughly aligned with the dedicated diffuser slots. In this case a flow rate of Me is achieved and minimum flux disturbances in the polygonal ridge region are obtained. ideally; The size of the turbulence release holes is chosen slightly smaller than the jet cross-section of the fluids that flow from the diffuser holes

Having taken into consideration the diffusing liquid expansion after leaving the diffuser holes. This affects; The flow is not laminar (bla), which reduces the separation of charges during the flow.

An alternative suggestion is to align the diffuser holes with the wall segments between the turbulence release holes. It is preferable to align the diffuser holes evenly with the middle of the wall segments in order to achieve equal load on the wall segments” caused by the liquid hitting the wall with an effective force. With this relative position a similar strong deceleration is achieved on the circumference of the girth as previously mentioned; But with an essential feature; That the flowing fluid has an additional flow path with openings to release flow disturbances and obtain a steady flow as far as possible in the space. And so on; Heavy stress on materials is eliminated from highly turbulent flow and static pressure is greatly reduced. Although 0-0 pressure lag and twice redirection of the flowing fluid hardly result in a reduction of the maximum flow rate compared to tanks without a diffuser (and/or static wall) also in this embodiment. outside as well as inside the space between sprays such as the effect created with this alignment» where the liquid; When it hits a de-static wall cutter with full force; It is dispersed in the form of very fine droplets, which then partially fall directly down through the gap between the diffuser and the wall segments and enter 5 partly by diffusion and filling the volume of the external tank. Next; There is no jet of fluid; which can

To cause more static charges when the liquid hits the inner region of the hollow body. When materials with better conductive properties are used compared to the materials used for lining and ribbed extrusion; or a non-conductive material with a conductive coating is provided; This leads to another advantage of teaching the invention. This relates to the fact that most shipments; any electrons; which conveys Gob 0 flowing into the valve or coupling; It already exists in a de-static wall. This is known Lad from previous pressure tanks; where backflow is prevented through the annulus as part of the non-conductive hollow body. When the ribbed extrusion is made of conductive material; Back flow is possible without problem in the present invention due to the incorporation of the antistatic wall into the ribbed face. Hence, the basic idea of the present invention is to incorporate the antistatic wall into the ribbed face of a pressure tank ¢ the ribbed face which eventually serves the connection (pressure resistor) of the coupling Actual for the installation of liquids containing hoses or tubes with the hollow body, including the possibility of covering it with fiber cements. This prevents the ribbed protrusion attached to the hollow body from being a weak point in the space between the diffuser and the static wall. The idea is 0 furthermore; By accessing the opening of the turbulence release holes largely steadily;

and less disturbance in the existing space; which reduces the stress under which construction is being built and the stress on the materials and parts; Which are subjected to this pressure and correspondingly increases the flow rate under a given dictation pressure. The liquid becomes diffusive when it hits the destatic wall segments or at most when leaving the turbulence release holes which act as a constriction; and by leaving space in the space between them as a fine splash and the finest drops; which no longer has sufficient kinetic energy; In order to bring about the removal of a large charge when it reaches the inner wall of the hollow body or by friction in the air. Thus the antistatic effect on the antistatic wall with turbulence release holes according to the present invention is at least equivalent to the one with a continuous collar; It avoids its huge negativity. Hence further useful developments in the present invention; lly can be achieved by itself 0 or in combination; Inasmuch as they do not explicitly exclude some of their members, they will be presented and explained below. Preferably, the number of turbulence release slots should be an integer number of Mle diagonal diffusers. In particular, the present invention proposes to provide an equal number of turbulence release openings and diffuser openings. Furthermore; The antistatic wall is preferably symmetrical, as is the case in the diffuser. It is preferred in ald form that the diffuser as well as the static removing wall including the turbulence release slots have double ly rotational symmetry of n > 2 and specular symmetry. Thus, the stress on the polygonal extrusion is ensured; lly generated by redirecting fluid flow, torque is equal and ribbed extrusion stays away from any stress and torque. Disturbance release holes can be in different numbers and shapes; For example, round or oval holes in the antistatic wall. It is preferable to design them as rectangular grooves or 0 grooves; starting from the lower edge of the wall and extending over ia principal perpendicularly; It is in a transverse direction almost identical to the diameter of the diffuser holes. First dig everything this solution lies in the ease of its manufacture Lilly produced in the direction of the flow of fluids flowing in the area of the polygonal extrusion; It represents a very good balance between turbulence due to flow disturbances and stratified plateaus and creates quite a near constant flow. for more flow control; The GUSH can change the side of the ASL charge remover wall for example. It can be in the form of a basic circular contour or a basic polygonal shape is chosen. Another possibility is to influence the flow conditions beneficially during filling of the pressure tank; The effect of having suitable inconsistencies on the surface of the diffuser that touches the flowing liquid before leaving the diffuser holes. This can for example be in the form of a convex or conical elevation opposite to the flow direction of 0 fluid; This results in improved release pressure at the polygonal extrusion and higher flow rates.

In order to be able to ensure protection against pressure during fluid discharge from the pressure tank; For example, in Alla line failure, a mechanism can be incorporated into Alla that closes the manholes at very high flow rates. A useful embodiment AT is to design the antistatic wall as a separate part to be bolted to the coupling. This facilitates maintenance rather than replacing the antistatic wall when it is used extensively and therefore subject to wear. When using the antistatic wall without turbulence release holes; which are subject to the highest stress when subjected to contact by liquids»; And this is represented by ease of service and a large Bae shape compared to previous designs; In which the collar is a bay part of the body cavity / lining.

Regardless, Lee, if the antistatic wall is fixed to the coupling piece or designed as a non-Fam part of the neck strap or ribbed protrusion; It can use different materials to manufacture it; In order to affect electrostatic properties or corrosion. Thus, eg for example, plastic materials can also be used in addition to metal.

The ribbed extrusion at (ha) pressure according to the present invention is in the cases made of a piece

5 one; Any coupling or connection for valves, hoses, pipes or the like incorporated into a polygonal gull. This avoids additional points of contact rather ryat; Which can endanger the tightness of the pressure tank. Based on the different requirements Lad is related to the properties of the materials used in the ribbed extrusion in the contact area with the hollow body; where it shall be sufficiently flexible and malleable in order to conform to the elongation of the hollow body under compressive stress and thermal effect and in the area of

0 to a fluid-containing valve» hose or tube; As it needs to be sufficiently stable and rigid to avoid rapid fatigue with repeated coupling and non-OIE The present invention proposes and JE to materialize two pieces of ribbed extrusion. In this case the second part; the so-called neck ring; of rigid materials; preferably No Bak part of the metal centrally in the outer contact gn made of dul materials; the material is more robust; especially the material that looks like plastic in the body

5 cava; With which it can be connected by liquefaction of the material. This neck washer has internal threading or another coupling with the ability to connect with a valve or other coupling. Here the Gaal ring is pressed or molded into a supplementary opening of the ribbed ridge. add to that; The ribbed extrusion is formed by molding or injection process around the neck ring.

neck loop; Especially the contact area of the ribbed extrusion; Thanks to the symmetry not being circular; 0 but only double rotational symmetry according to n and in particular the specular symmetry; which contains

Axial direction The shape of the contact area can for example be polygonal; star or wavy line. The contact area is thus enlarged and better torque transmission is possible from the neck ring to the ribbed bore. In addition, the present invention proposes to insert circumferentially deployed grooves and/or connecting holes into a neck ring, collar, or flanges; In which a liquid thermoplastic material can flow during the manufacturing process. any refrigeration; Thus a fully stable connection; And suitable for the transmission of torque» and this is what is then reached. This is important; Whereas, the torque that may occur during possible frequent changes; i.e. screwing in and loosening out a coupling” could deteriorate the coupling between the neck ring and the actual ribbed protrusion; Which can lead to leakage and even lead to a defect in the ribbed extrusion over the years.

The same is true for ple transferring rotation from the polygonal process to the hollow body. Therefore, the contact area between the polygonal extrusion and the hollow body is formed as the non-circular torque coupling. such as the contact area from the neck ring to the ribbed protrusion; The shape can also be polygonal; star or wavy line. Alternatively it can be molded by blowing plastic material around the ribbed extrusion; which ensures a very tight connection and voltage transfer; Especially when there are vertical holes

5 in the outer region of the ribbed protrusion; Which still liquid material from the hollow body flows and solidifies there. The negative in this case is that the ribbed bump is already available when the hollow body is manufactured and cannot be changed without damaging it.

Therefore, the present invention prefers to design the contact areas of one or more polygonal protrusions in the hollow body outlet region in a manner accessible to all so that the protrusion can be inserted

0 ribbed and welded and/or pressed after the hollow body is ready and hardened. In particular the axial cross-section of the outlet shall be progressively increasing outwards; And this way; The axial projection of the outermost cross-sections on the outside includes those on the innermost side. if gia is the polygonal process made of a plastic material similar to one of the materials of the hollow body; Then the connection can be made better by liquefying the surface of the contact areas and pressing them together.

in the previous technique; The diffuser shall be within the coupling” i.e. a valve for connecting a hose or pipe and in the general case; The present invention Jie also includes this embodiment. While the present invention proposes; The diffuser also incorporated the antistatic wall into the same ribbed extrusion. This is based on; that the "lly" coupling is normally screwed onto the inner serration of the ribbed process and neck ring; Relatively speaking, it does not always have the same angular position relative to the antistatic wall; but on

0 Least This situation varies slightly with each pull on the teeth. Hence the relative position of the slots

The diffuser on the turbulence release slots is also not always the same; Which may have a negative effect on the process of flowing fluid flow. This difference from the relative position is removed by incorporating the diffuser into the ribbed pediment. With Lyla vector diffuser holes can be round, oval or polygonal; Especially rectangular. Another advantage of this embodiment is that the couplings are usually standard size not equipped with a diffuser, but have a simple; Inlet with axial orientation at the lower end. with the diffuser integrated into the same ribbed extrusion; Hence, the present invention can apply the advantages of decelerating the flow of a liquid which flows under high pressure through the diffuser and the antistatic wall; Although 0 use standard coupling disconnects. neck ring; which is not the Bat part of the actual polygon bump; Preferably, it should have a central groove at the top of the outlet. In this way, Laila ensures consistent positioning of neck ring and ribbed extrusion PA ribbed extrusion manufacturing process; Thus it is relatively important for straightening turbulence release holes and diffuser holes. It also facilitates later quick connection and centering of OEY parts (5 especially; when it is done in an automated way; For example through bot/robot compilation. In a more preferred embodiment the neck ring includes a gasket which is oriented in the axial direction downwards and is surrounded on the outside by the material of the ribbed ridge. On the one hand contact the actual polygonal bump and thus extend farther. From “SAT Lali Polygon Materials, Allg is diagonally oriented to the inside of the hoop; forms 0 dam flange; Cua the diagonal thickness has a primary influence on the tightness of the pressure tank. limited by the vertical dimension of the ribbed extrusion; The aperture extends slightly into the interior of the corpus callosum when the ribbed process is installed. The pressure inside the tank now acts on this cle gull inside and outside; The inner side is then formed based on a design without or with a diffuser integrated by a ribbed butt coupling. The material is thus compressed from the ribbed extrusion 5 and especially the connecting flanges. Furthermore; The fluid or gas in the gap between the coupling ring of the coupling piece and the connecting flange is compressed by pressure in the reservoir and the connecting ring as well as the flanges are deformed in this gall until the forces between the tensions in the coupling ring; The flange flange and the pressure inside the tank are balanced. In the event that the chosen dimension of diagonal thickness of the bolted flange is not sufficient; This results in a leak at the connection between the actual ribbed face and the neck ring or the ribbed face and the coupling piece. And can

Avoid the latter by using a Jal-ring between the coupling piece and connecting flanges. The stiffness of this O-ring should be increased with the tank pressure test; Thus also with the maximum pressure for the required filling.

Therefore the present invention proposes a larger diagonal thickness dimension of the dam flange with the intended test pressure for the reservoir of this embodiment. In practice it is recommended to increase the thickness of the sluice flange significantly

proportional to the test pressure. Tests have provided evidence; That change according to relationships

+ 3.0 bar (mm) - 0.01 © (bar) (Sled Dmax (mm) + 2.95 Dmax (mm) = 0.019 Dmax Dmin

Optimum tightness P is the test pressure, Dmin is less and Dmax is the upper limit of the preferred diagonal sealing flange thickness 0. Assuming the use of a sluice ring between the sluice flange and a piece coupling with stiffness

0 sc of 90 at least.

An alternative method of connecting the ribbed protrusion to the valve; Ally in the application of the previous technique, especially for pressure tanks with a hollow body made of steel, is the use of valves with a conically tapered outer thread. The metallic bonding achieved, in standard practice still supported by a viscous seal, renders the use of a sealing ring unnecessary. In a useful embodiment of the present invention;

5 Connecting such a tapered valve through a suitable design of the neck. In particular the polygonal extrusion design without diffuser processing; Also, tapered valves in most widely distributed designs are already equipped with a diffuser; But without the antistatic wall. In order to be able to adjust also in this embodiment the relative position of the diffuser holes and the turbulence release holes; It is suggested to provide in the ribbed protrusion and valve suitable marks; Ally indicates the position of the slots.

In order to withstand very high pressure tests from several hundreds up to more than a thousand Ob, the body of the pressure tank of the present invention must be hollow. The outer shell layer must be reinforced with a layer of fibers. This is all that is most necessary » and the thermoplastic material suggested for the veneer body/lining; It can hold only a few bars at a time, at least approximately ten bars, with typical wall thicknesses in the millimeter range. The fibers used in this layer can be

5 to be synthetic fibers; like a glass; (pl aramid dyneema or synthetic fibers (AY) or natural fibers. Different types of fibers can also be mixed and processed into a blend in order to optimize costs, for example in the case of rigidity. The matrix is formed in which these are incorporated. Fibers; either of thermoplastic or UV-curable (synthetic) resins such as epoxy resins; or of plastics; for example polyethylene; which may be applied

0 in liquefied form on a liner wrapped with fibers and then allowed to cement. Particularly preferred is served

The surface of the hollow body to pre-treatment with fiber and apply a matrix that is not a fan part of it; This increases the roughness and thus achieves better adhesion between the reinforced composite layer and the liner/hollow body. BRIEF EXPLANATION OF DRAWINGS Below is a detailed explanation of the specific features and characteristics of the invention with pictorial embodiments. However; Don't restrict these inventions; just explain them. A schematic representation is shown: Figure 1: Cross-section by embodiment of the pressure tank of the present invention with static charge eliminator wall with turbulence release holes in alias eg and a La Baty diffuser of the coupling piece. Figure 1a: Enlarged section of the lower gall of the spur in Diagram 1. Fig. 2: Perspective view from an angle below on the spur of Fig. 1. Figure 3: Perspective view from an angle below and cut-off view of another rendering of the spur with diffusor integrated. Figure 4 Relationship between test pressure and dam flange thickness in the diagonal direction. Figure 5: Cross-section of another embodiment of the polygonal extrusion with diffuser face surface contours. Figure 6: Cross-section of the AT embodiment of the polygonal extrusion and its coupling with the static charge remover wall belongs to the latter and diffuse. Figure 7: Perspective from an angle below on another embodiment of a coupling piece with a wall of static charge eliminator and diffuser. Figure 8: Cross-section of a DAT embodiment of a polygonal extrusion with integrated 0 pressure relief device in the diffuser (closed position). Fig. 18 Cross-section through the polygonal overhang. 8 with pressure relief opening device Detailed description: Figure 1 shows the through-port cross-section of the pressure tank according to the present invention with a ribbed protrusion. Ribbed bump 2 is firmly attached at Mie 11; and then the polygonal gull contact regions 6 and 111 liner contact regions form a torque coupling for the continuous and efficient transmission of torque from the polygonal protuberance 2 onto the hollow body/lining 1. The last torque coupling is formed by

Contact areas between ribbed extrusion part 20 of ribbed extrusion 2 and the stiffened fiber as a layer of reinforced fiber 8; which partially covers the hollow body 1 and the polygonal sill 20. The ribbed protrusion 2 has two parts and consists of the outer ribbed protrusion part 20 and the neck ring 23 which has an internal serrated sloping thread 25,; To tighten the coupling piece 3 into the ribbed protrusion 2. During the manufacturing process; Especially in the automated way by assembling a robot/robot; Handling and positioning of the 3-piece coupling is facilitated by grooved centering 234 at the upper end of the inner side 25. at the tip

The bottom of the hole is the diffuser 21 , the diffuser 22 is a non-Ban part of the coupling piece 3. The diffuser 22 serves to decelerate and redirect fluids that flow under high pressure; By closing the 21 slot in the axial direction and featuring only 221 slots in the diagonal direction. liquid; that

0 tapers diagonally after passing through the diffuser holes 221 strikes the antistatic wall 27 around the diffuser 22 with a lower speed; Compared to theoretical flow rate below allll, this static-relief wall is formed as a cylinder collar that is interrupted by 28 turbulence release holes and here designed as elongated grooves. The antistatic wall 27 is a gall graduated from the outer polygonal protrusion part 20 in the axial direction and is therefore an integral part of the part

5 overhang alias 2. The 22 diffuser has a mirror-rotating symmetrical design with 6-fold rotation symmetry in this embodiment; So that the coupling remains free of torque during the packing process. The same is also true of the antistatic wall 27.

This ensures a fundamental improvement of the present invention; In particular, the joint 12 between the hollow body 1 and the polygonal protrusion 2 lies outside the space between the diffuser 22 and the eliminator wall 27. Thus it is

0 useful to avoid; that the fluid flowing under high pressure is pressurized at the joint due to the high static pressure of the static charges; which is built in the aforementioned space between; and rima combined with the dynamic pressure of the fluid; which strikes under high pressure on the boundary surface of the space between them; Thus compromising the permanent and tightness of the pressure tank during the filling process or in the worst cases during plastic deformation.

This is due to the fact that only a small counter pressure is built up in said space; The 28 turbulence release vents also create an additional flow path. When flowing through the 28 holes the liquid thus spreads in a "fog" of fine droplets; This reduces the risk of static dad from areas that are at a distance greater than port 11.

The tightness of the pressure tank described of the present invention is further ensured; During the filling process 0 as well as in a pressure-filled state; Through the dimension of the diagonal thickness of the sluice flange 24 which is located

between neck loop collar 231; which extends downwards from Gad ring 23 in the diagonal direction and gasket 0 circular gasket 31 is fitted below the coupling piece 3; and increased proportionally to the intended test pressure; i.e. the maximum pressure of the tank. Figure 1a shows the enlarged section of the lower half of the protrusion polygon 2 respectively from the lower gall end of the aperture 21. The difference of the height (gt) (toothed slope) of the inner thread 25 and the distance (du) between the lower edge of the inner thread 25 and -0 gasket 31 which seals the gas is selected according to the relationship (Agt - Du < 0.5 tb) (tb) based on the geared slope of the inner thread 25. Figure 2 shows the perspective view from the angle below on the polygonal overhang From Fig. 1. 0 shows the hexagon-shaped contact area 26 which forms a torque coupling to transmit torque from the alias protrusion 2 on the hollow body of the pressure tank 1; With the supplementary contact area of the outlet of the corpus cava; 2 ribbed protrusion is mounted and welded or bolted. The 3-piece coupling (which consists at the lower end of the diffuser 22; which constitutes an obstacle to the flow in the axial direction; is screwed to the inner thread of the invisible neck ring 23. The 3-piece coupling is threaded to a watertight end that has 5 diffuser openings 221; which extends In the diagonal direction, roughly aligned with the turbulence release openings 28 in the wall of the desliver 27. Thus, a high flow rate is achieved during the filling process, but at the same time a good antistatic effect is still maintained by the appropriately narrow dimension of the turbulence release openings. 28 in width.However, this effect is optimal when the diffuser orifices 221 do not coincide with the turbulence release orifices 28 but encounter those continuous from the static wall of the charge remover 0 27 so that the liquid flowing from cla [22 hits these and more aad is slower.In this case almost all of the loads;which are transported away from the coupling piece 3 or the diffuser 22 and are deposited in the static wall 27 from where they are directed away from the droplets to the coupling piece 3 in a row the diffuser 22; as the wall static remover 27 is part of the spur polygon 2 which can be modeled relatively a many connectors and not from the hollow body 1. Figure 3 shows a preferred AT embodiment of the polygonal extrusion of the pressure tank of the present invention. The upper figure shows the section a view from a coll angle indicating that the diffuser holes 221 are aligned relatively to the static charge remover wall 27 with the disturbance release holes 28 in such a way; that the port fluid; Which flows from the orifices 221 exactly concentrically strikes the destatic wall segments ag cut segments 27. Like the embodiment shown in Figures 2-1 the diffuser 22 also has 0 mirror symmetry and 6 rotational numbering. The figure shows the lower section a section cut away from the extrusion polygon

(Say .2) It can be seen that this Lad is formed from two parts; the outer ribbed protrusion gin 20 and the neck ring 23. In contrast, the neck ring 23 includes an internal threaded slope 25 for mounting a hose, tube, valve or other Segment coupling.The essential difference in the previous embodiment is that the diffuser 22, as clearly shown in this section figure, forms an integral part of the ribbed protrusion 2, especially shearing the polygonal protrusion 20. Thus it is avoided that the relative alignment of the diffuser apertures 221 with the degaussing wall The static 27 and turbulence-release openings 28 may vary with each screw operation. Figure 4 shows in a graph the recommended relationship between the diagonal thickness© of a sluice flange 24 and the required test pressure. The thickness of the sluice flange on axis ( Y) is represented by Fig. 4; and the pressure on axis ( x) and the course increases strictly in a straight line with a proportionality constant (mil) of 0 0.01 mm/bar in the case of the recommended maximum thickness (dmax) and 0.019 mm/bar in the case of the recommended minimum thickness (dmin.) The intercept axis at 100 Bar are 3.03 mm straight by 4.0 mm with the minimum straight minimum recommended thickness.Therefore it shall be SMA Diagonal force (0) for the specified test pressure (©) between (DMIN) and (DMAX); This is to ensure optimum tightness. Figure 5 shows a useful embodiment HAT of the polygonal extrusion 2 of the pressure tank of the present invention; Which on the surface of the inner face 222 of the truncated cone-shaped diffuser height facing the flow direction of the flowing fluid to adjust the flow conditions. Side flange (ial) ring 232 rests on neck ring 23 for axial loads. 233 Full ring holes are inserted into it; Thermoplastic materials from extrusion can flow through the 0 manufacturing process. Figure 6 shows an embodiment where the diffuser 22 as well as the antistatic wall 27 form part of coupling piece 3. This provides a special feature; that the anti-static wall 27 as designed to withstand high stress can be easily accessed for servicing or draining measures; Ol piece 3 25 Figure 7 shows a rendering of the electrostatic wall 27 and diffuser 22 where the disturbance release holes 28 of the electrostatic wall open diagonally spindly and show a polygonal contour. Such a shape of disturbance release holes and appropriate profiles on the inner surface of the wall is antistatic; who faces the publisher 22; represent possibility; To explicitly direct the flow of the liquid and also to influence the wear of the material from the wall of the static charge 27 itself.

Figure 8 shows an embodiment of the diffuser 22 with integrated pressure relief device 9; which is shown here in a closed position. A supplementary photograph of the pressure relief device 9 in the open position is shown in Fig. 8a. in the event of a sudden loss of pressure on the outlet side and thus an increase in flow during fluid discharge» eg when a line bursts; A pressure relief device is made along and closes the outlet above the diffuser holes 221 Reference Nos. LIST 1 - Casal body/lining 1 - Port in the hollow body 1 1 - Polygonal process contact area 0 2 - Polygonal procession 2 - Joint between the casal body and the polygonal process gall - 3 inner of the hollow body 0 - ribbed procession part 1 - hole 5 22 - diffuser 1- diffuser hole 2 - inner face surface of the diffuser with elevation 3 - neck ring 1 - neck ring collar 0 232 - neck ring flange 3- eyelets Neck ring 4 - Groove centering 3 - Coupling piece 1 - Connecting ring / sealing ring 5 24 - Flange ring 5 - Internal threaded slope 6 - Hollow body / liner contact area 7 - Electrostatic wall 1 - Internal antistatic wall surface 0 28 Turbulence release slots

8 - Fiber reinforced layer 81 - Torque coupling 9 - Pressure relief device P - Test pressure © - Diagonal dam flange thickness

Dmin - Recommended Minimum Sealing Flange Thickness DMAX - Recommended Maximum Sealing Flange Thickness TP - Thread Pitch HT — Thread Height

0 do - connecting washer for the lower spacing to the lower sprocket

Claims (1)

1- Pressure tank for storage of liquids/gases under high and low pressures; in particular liquefied petroleum gas, liquefied natural gas or compressed natural gas comprising: - a hollow body (1) of thermoplastic with at least one outlet (11); in the presence of a surrounding contact area (111); equ - 5 polygon (2) one for each port o(11) having at least one (21) hole extending into the inner gall (13) of the hollow body (1) aug connected over its entire surface with a region supplementary connection (26) to the connection area (111); such that the hole (21) has a diffuser (22) at a lower end where it may be part of the ribbed protrusion (2); or neck ring (23) or coupling piece (3) It seals the hole (21) in the axial direction and includes the diffuser holes 10 (221) oriented mainly in a diagonal direction; - an antistatic wall (27); inside the hollow body (1); surrounding the diffuser (22); where it forms part of Ribbed protrusion (2) or of the neck ring (23) or to be attached as a separate part to the coupling piece (3); Distinguished in that 15 the antistatic wall (27) has many disturbance release holes (28); Cus placed For diffuser holes (221) in such a way as to ensure that the liquid, which flows internally by pressure, has a substantially constant flow in the area below the ribbed bump (2). ( Ble - 20 for elongated apertures; start of the lower edge of the antistatic wall (27) and extending over a substantial part of its height and/or - aligned with the diagonal openings (221) alll (22); or - aligned with opposite integral parts of the antistatic wall (27); Especially with their respective center. 3 - pressure tank according to protection 1; which is distinguished in that the antistatic wall (27) has a rounded contour or more contour (eg Jakes) a contour with wavy lines or a polygonal contour along its surface (271) facing the diffuser (22). 4 - pressure tank according to protection 1; Which is distinguished in that it is for the publisher (22) - diffuser holes (221) round; oval or polygonal; specifically rectangular; or - inner face surface (222); It is flat or has more relief with a specific convex or conical elevation; or - mechanism (9); where orifice (21) closes during the fluid's critical flow rate. 5 - pressure tank according to protection 1; Which is distinguished in that the hole (21) of the ribbed protrusion has (2) an internal thread (25); to which a valve or other coupling (3) is attached; and includes the following for the purpose of sealing - at least one sealing ring (31); or Ghee - graduated external. 0 6 - pressure tank of claim 1; characterized in that the ribbed protrusion (2) includes a injected or integrated neck ring (23); which is located Concentrated in an external connection part (20) in the ribbed protrusion (2) and supplying at least part of the hole (21) and the inner thread (25). 7- Pressure tank according to protection 6; which is distinguished in that the Gull ring (23) - have low symmetry compared to circular symmetry; with respect to rotation about the axial direction of the hole (21(¢) in particular a rotational symmetry doubled according to the number n; for example, cross-section (Ja) cabins or less than hl and/or - have specular symmetry with the plane of the mirror; have an axial direction” and/or have a circumferential collar (232) and extend in the diagonal direction; and have holes (233) and/or have a central groove (234) in the upper part of the aperture ( 21); and/or - shall be made of metal; and/or - shall have connection holes and grooves. 8- pressure tank according to Clause 6; which is distinguished in that the connecting part (20) shall be made of thermoplastic material; and - shall include on a connection area (26), by means of which it is connected to a extending its entire surface with the complementary contact area (111) of the port (11) located in the hollow body (1); specifically by injection; Bonding or welding using surface liquefaction of thermoplastics in the contact areas (111) and (26) and then applying pressure on them. 9 - pressure tank according to element 6 of protection; which is distinguished in that the neck ring (23) has on the underside a collar for the Gia ring (231) facing downward and surrounding the opening (21); Where this collar is incorporated into the material constituting the connecting part (20); So that the polygonal extrusion material is formed (2) Between the inner side of the Gul-ring collar (231) and the hole (21) of the sealing flange (24). 3) Dam flange (24) 1- The pressure tank according to protection 9, which is distinguished in that the diagonal thickness of the dam flange (24) is chosen in proportion to the test pressure of the pressure tank (1). It is distinguished in that the diagonal thickness of the dam flange (24) is chosen between a minimum thickness of Dmin and a maximum thickness < 000, where this thickness is associated with the test pressure © by the following relations: 3.0 + (bar) P 0.01 = (mm) Dmax .2.95 + (mm) Dmax 0.019 = (mm) Dmin 10 3- Pressure tank according to protection 8; Which is distinguished in that it has contact areas (26 1) to transfer the torque from the polygonal protrusion (2) to the hollow body (1) as a torque coupling with non-circular symmetry with respect to rotation around the axial direction of the hole (21) and in particular double rotational symmetry according to for the number n; For example a polygon shape. 5 14 - pressure tank according to element of protection 8; Which is distinguished in that another layer (8) is wrapped around the hollow body (1); fibre-reinforced; especially fiberglass; carbon fibre; aramid fiber; dyneema fibers; other synthetic and/or natural fibers; It also includes a fiber fusion primer, especially of thermoplastic resins, UV curing resins, or other resins; with additional surface treatment of the hollow body (1); which is done specifically before applying the reinforcing layer. 5 - pressure tank in accordance with Clause 14; which is distinguished in that the second torque coupler (81) is integrally machined into a fiber-reinforced layer (8) in the port area (11); This coupling has a non-circular symmetry; In particular, a double rotational symmetry, Ty, of the number n or a polygon shape for the purpose of reducing the rotational torques that affect the polygonal protrusion (2) in layer (5). 5 16 - pressure tank according to element of protection 5; Which is distinguished in that the difference between the thread height HT of the inner gear (25) and the axial distance between the lower end of the inner gear (25) and the center of the seal ring (31) is according to the following relationship: TP 0.5 > [2k] DO - [2k] HT and the relation [mm] which remains valid; nr TP = [al] HT 30 — 1 2 — where Bolad TP is the inner gear (25) measured in millimeters per turn and turns nr 0 2 2 0 , NE AL to A ¥ 2 1 sa i | ¥ ' : the | [J b 2) 3 A etc No º and bin x . : \ C Sry LL 0 b ; z | 1 EE the > | | J Habibi B A first Ty - | M 1 > Knit | A127 HEE for vy YA 7 11 #? 11 1 i Ca alt 0 2 3 0 vo Ty 0 l : trembling of the inner security 1 SE A a apo: samt ee RE epee DUN pe dy from the tooth of the mind Te 1 lf jij PX 17 : : : ??1 KA Ty. rra — 2 4 — v1 1 d A \ a TY NACE 1 1 A \ = Fa A Es we / / / Ko 1 a ny. uy ) NT —— ANY NAGE NY NY. \ FN NT Hs a ss :° A : A x / 7 SRN f mk V ~~ Sr, 4 1 ÷ SS YY YA Figure ? 0 2 5 — 1 YA Pu 1 Sr : EIN 3 L L L A L A L A L A L A L A L A L L A L L A L L A L A L LAL - : 1 Hi NAN Zhan Rasi: and TNS Haha = / / Yo vA Y 3 A Walh M " Rolf = oY =r | A L Z 1 Maa | 7 VN 71 minus 8 Figure ? — 6 2 — Se SOUS AU SE SR a 1 oe . r jail the preferential term the whole limit —_— ———— l l l i ee } — ss ash a fa a kk last £ != Te behind mam alma aa i d ah anafas d ha Al-Qatar Al-Had TAN Tata » AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA Maw FB. Yes yr | Z 3 / == A for the EPR | SE ipa Aha Cole | | We look at - b ( YY ) a " figure o — 2 8 — 2 , Z web Sa Raha ND | _ \ = ' Yi — | 3 / Ne TN | ; —x 4 ON 2 IOC | yey YY YY 1 Figure — 2 9 — LY I rd d NN 1 | AN > Love TH ty J 2. Yarla .a: 1 84 m SE ya TY VJs ARI? yy ve N === B | A 7 NY, ~Y TX hi ¥ > 1 B FA 0 L yy B A A VR A Fig 7 p. JUN BA ELIE L 0 YY TT TY) 777 0 97 i A ¢ I< > 1 Sued Authority for Intellectual Property RE .¥ + \ A 0 § 8 Ss o + < M SNE A J > E K J TE I UN BE Ca a a a ww > Ld Ed H Ed - 2 Ld, provided that the annual financial consideration is paid for the patent and that it is not null and void for violating any of the provisions of the patent system, layout designs of integrated circuits, plant varieties and industrial designs, or its implementing regulations. Ad Issued by + bb 0.b The Saudi Authority for Intellectual Property > > > This is PO Box 1011 .| for ria 1*1 v= ; Kingdom | Arabic | For Saudi Arabia, SAIP@SAIP.GOV.SA